DE69535458D1 - Method and system for detecting variable transmission rates - Google Patents

Method and system for detecting variable transmission rates

Info

Publication number
DE69535458D1
DE69535458D1 DE69535458T DE69535458T DE69535458D1 DE 69535458 D1 DE69535458 D1 DE 69535458D1 DE 69535458 T DE69535458 T DE 69535458T DE 69535458 T DE69535458 T DE 69535458T DE 69535458 D1 DE69535458 D1 DE 69535458D1
Authority
DE
Germany
Prior art keywords
variable transmission
transmission rates
detecting variable
detecting
rates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69535458T
Other languages
German (de)
Other versions
DE69535458T2 (en
Inventor
Tetsuya Takaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of DE69535458D1 publication Critical patent/DE69535458D1/en
Application granted granted Critical
Publication of DE69535458T2 publication Critical patent/DE69535458T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/3961—Arrangements of methods for branch or transition metric calculation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/65—Purpose and implementation aspects
    • H03M13/6502—Reduction of hardware complexity or efficient processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/264—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for data rate control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0046—Code rate detection or code type detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Artificial Intelligence (AREA)
  • Error Detection And Correction (AREA)
  • Communication Control (AREA)
  • Dc Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
DE1995635458 1994-11-14 1995-11-10 Method and system for detecting variable transmission rates Expired - Lifetime DE69535458T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30436394 1994-11-14
JP30436394A JP2605641B2 (en) 1994-11-14 1994-11-14 Variable bit rate determination method and device

Publications (2)

Publication Number Publication Date
DE69535458D1 true DE69535458D1 (en) 2007-05-24
DE69535458T2 DE69535458T2 (en) 2007-12-13

Family

ID=17932125

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995635458 Expired - Lifetime DE69535458T2 (en) 1994-11-14 1995-11-10 Method and system for detecting variable transmission rates

Country Status (7)

Country Link
US (1) US5638408A (en)
EP (1) EP0712219B1 (en)
JP (1) JP2605641B2 (en)
KR (1) KR0171208B1 (en)
AU (1) AU689967B2 (en)
CA (1) CA2162332C (en)
DE (1) DE69535458T2 (en)

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US5878098A (en) * 1996-06-27 1999-03-02 Motorola, Inc. Method and apparatus for rate determination in a communication system
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CN1126253C (en) * 1996-10-25 2003-10-29 松下电器产业株式会社 Method and device for determining thresholds of metric values used in Viterbi synchronization evaluation circuits
DE19651593B4 (en) * 1996-12-11 2008-11-20 Rohde & Schwarz Gmbh & Co. Kg Arrangement for optimizing the data transmission via a bidirectional radio channel
US6005898A (en) * 1997-03-12 1999-12-21 Interdigital Technology Corporation Multichannel viterbi decoder
US6404828B2 (en) 1997-03-12 2002-06-11 Interdigital Technology Corporation Multichannel decoder
KR100243213B1 (en) * 1997-06-14 2000-02-01 윤종용 Apparatus for estimating the quatity of viterbi decoding data using zero state metrics(ZSM)
KR100407328B1 (en) * 1997-07-30 2004-03-22 삼성전자주식회사 Channel coder of mobile communication system and encoding method thereof
KR100231488B1 (en) * 1997-08-13 1999-11-15 김영환 Apparatus and method of extracting sample value of dss type
US5974091A (en) * 1997-10-30 1999-10-26 Communication Network Systems Composite trellis system and method
US6477208B1 (en) 1997-10-30 2002-11-05 Comtier Composite trellis system and method
FI104769B (en) * 1997-12-01 2000-03-31 Nokia Networks Oy Method and apparatus for identifying a logical channel
US6112325A (en) * 1998-01-23 2000-08-29 Dspc Technologies, Ltd. Method and device for detecting rate
US6185265B1 (en) * 1998-04-07 2001-02-06 Worldspace Management Corp. System for time division multiplexing broadcast channels with R-1/2 or R-3/4 convolutional coding for satellite transmission via on-board baseband processing payload or transparent payload
US6529730B1 (en) * 1998-05-15 2003-03-04 Conexant Systems, Inc System and method for adaptive multi-rate (AMR) vocoder rate adaption
JPH11340840A (en) * 1998-05-28 1999-12-10 Fujitsu Ltd Mobile communication terminal and transmission bit rate discrimination method
US7079584B2 (en) * 1998-08-10 2006-07-18 Kamilo Feher OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation
US6470055B1 (en) * 1998-08-10 2002-10-22 Kamilo Feher Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems
KR100444980B1 (en) * 1998-08-31 2004-10-14 삼성전자주식회사 Method and apparatus for determining data rate of transmitted variable rate data
US6917629B1 (en) 1998-09-11 2005-07-12 Ericsson Inc. Rate detection in radio communication systems
US6567466B1 (en) * 1999-02-16 2003-05-20 Agere Systems Inc. Method and apparatus for determining the data rate of a received signal in a variable data rate orthogonal spread spectrum communication system
US6603748B1 (en) * 1999-04-08 2003-08-05 Lucent Technologies Inc. System and method for prevention of reverse jamming due to link imbalance in wireless communication systems
US6480556B1 (en) * 1999-04-27 2002-11-12 Ericsson Inc. Rate detection apparatus and method for variable rate speech encoding
US7054377B1 (en) * 1999-12-15 2006-05-30 Paradyne Corporation Space diversity trellis interleaver system and method
KR100327494B1 (en) * 2000-03-24 2002-03-15 윤종용 Key distributing method in secure communication system using multiplexed access manner
JP3438778B2 (en) * 2000-05-09 2003-08-18 日本電気株式会社 W-CDMA transmission rate estimation method and apparatus
US8014473B2 (en) * 2001-01-26 2011-09-06 Qualcomm Incorporated Method and apparatus for detecting messages with unknown signaling characteristic
DE10108535A1 (en) * 2001-02-22 2002-09-05 Caq Ag Factory Systems Data transmission method involves interrupting transmissions for sufficiently long periods, or providing redundant information, while error-free data transmissions cannot be anticipated
US7046719B2 (en) * 2001-03-08 2006-05-16 Motorola, Inc. Soft handoff between cellular systems employing different encoding rates
US7787389B2 (en) * 2001-08-20 2010-08-31 Qualcomm Incorporated Method and system for utilization of an outer decoder in a broadcast services communication system
US8014305B1 (en) * 2001-09-07 2011-09-06 Qualcomm Atheros, Inc. Wireless LAN using transmission monitoring
US6928605B2 (en) * 2002-03-29 2005-08-09 Intel Corporation Add-compare-select accelerator using pre-compare-select-add operation
JP4016709B2 (en) * 2002-04-26 2007-12-05 日本電気株式会社 Audio data code conversion transmission method, code conversion reception method, apparatus, system, and program
US7177658B2 (en) 2002-05-06 2007-02-13 Qualcomm, Incorporated Multi-media broadcast and multicast service (MBMS) in a wireless communications system
US7369510B1 (en) 2002-05-06 2008-05-06 Atheros Communications, Inc. Wireless LAN using RSSI and BER parameters for transmission rate adaptation
DE10242637B4 (en) * 2002-09-13 2005-05-12 Siemens Ag Method and device in a communication system for the receiver-side determination of a modulation used on the transmitter side in adaptive modulation
JP2004175052A (en) * 2002-11-29 2004-06-24 Sony Corp Medium to be recorded by ink jetting, ink jet imaging method, and printed matter
US8694869B2 (en) 2003-08-21 2014-04-08 QUALCIMM Incorporated Methods for forward error correction coding above a radio link control layer and related apparatus
US8804761B2 (en) 2003-08-21 2014-08-12 Qualcomm Incorporated Methods for seamless delivery of broadcast and multicast content across cell borders and/or between different transmission schemes and related apparatus
US7318187B2 (en) 2003-08-21 2008-01-08 Qualcomm Incorporated Outer coding methods for broadcast/multicast content and related apparatus
EP1717954B1 (en) * 2004-02-16 2012-06-13 Nippon Telegraph And Telephone Corporation Bit rate determination circuit based on low bit rate signal
US7809090B2 (en) * 2005-12-28 2010-10-05 Alcatel-Lucent Usa Inc. Blind data rate identification for enhanced receivers
GB0622829D0 (en) 2006-11-15 2006-12-27 Cambridge Silicon Radio Ltd Transmission rate selection
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Also Published As

Publication number Publication date
EP0712219A3 (en) 1998-01-28
AU3774495A (en) 1996-05-23
KR0171208B1 (en) 1999-03-30
EP0712219A2 (en) 1996-05-15
US5638408A (en) 1997-06-10
AU689967B2 (en) 1998-04-09
CA2162332A1 (en) 1996-05-15
KR960020039A (en) 1996-06-17
EP0712219B1 (en) 2007-04-11
DE69535458T2 (en) 2007-12-13
JP2605641B2 (en) 1997-04-30
JPH08139695A (en) 1996-05-31
CA2162332C (en) 1999-12-28

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Legal Events

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